起重機(ji)銅(tong)單極(ji)滑觸線‌是壹種用(yong)於(yu)給移動(dong)中的設(she)備(bei)供(gong)電(dian)的(de)輸(shu)電(dian)裝(zhuang)置(zhi)，特(te)別適(shi)用(yong)於(yu)起重機(ji)等(deng)重型(xing)設(she)備。它(ta)由兩(liang)部(bu)分(fen)組成：‌滑(hua)線導軌‌（固定部(bu)分(fen)，與(yu)電(dian)源相(xiang)接）和‌集電(dian)器(qi)‌（滑(hua)動(dong)部(bu)分(fen)，可(ke)在滑線軌道(dao)上滑動(dong)並(bing)與(yu)銅條(tiao)接觸(chu)取(qu)電(dian)，集(ji)電(dian)器(qi)用(yong)於(yu)與(yu)移動(dong)電(dian)機(ji)相(xiang)連）‌。